yeeeance



(No Model.)

W. lH. BURNBT.

` STEAM SUPERHEATER. No. 278,811. 1 Patented May 29,1883.

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N. PETERS. Phnm-Lnhognpher, washington. n, C.

` said apparatus as `illustrated in the nying drawings, in whiche of the city `ot' Newark,

" 1andState of New Jersey, have invented a l l UNITED STATES PATENT OFFICE.. l

WILLIAM fn.` sBURNET, on NEWARK, `NEW JERSEY, `Assierncn` To .JnMiis V y YEREANca on NEW Yoan, N. Y.

STEAM-SUPERH EATER.

4sPiazcIF'Im'rrpn arming para of Letters Patent No. 278,311, dated ivray 29, lsss;

l l Application `filed August 25, 1882. (N0 model.) t

To all whom 'it may concern! l `Be it" known that I, WILLIAM H. BURNET, in the county of Essex new and usefulApparatustbr Superheating lwbiclr the `following 'is a specifica` `t1o`n.`

The objectsof*my`invention are, first, to

provide a compact, `e'conomieal,`and effective arrangement for superheating ysteam by means of an'inner tubejsurrounded bywater, the watereontained andinclosed in an outer tube, `through `which the inner tube is passed. The l" outer tube and water beingheated by a furnace in the ordinaryway,'communicates` the l `heat tothefsaid inner\tube,1thereby eft'ectuf ally superheatingthesteamcontained therein.

Second, to econoinize the heat bythe useof j a double set of the `said inner andiouter tubes, p with water inclosedineachot thesaid outer f tubes, asalready described, in connection with i an upper and lo`wer"`steamchest infront and a single steam-chest at the back, so arranged that the steam, in the act of being super-' heated, passes from the front lower steam* i `chest through 4the inner ,tubesto the `steam- `I`j chest at the back, andfrom thence through `the upper inner tubes to theupper steam-chest `in front, and from thence to the plaeeof use or exit.` Third, to"`further render effective and toeconomize the heat employed to supert heat the steam in theapparatus by arranging the same in a chambered furnace, as shown in Figure l, and hereinafter described. In order to attain `these objects,I construct my accompa- Fig. lis a vertical and longitudinal section l. """fof the entire apparatus,including the boiler A,`for generating the steam. Theinner tubes,

l for superheating the steam, are shown at d el B is the steam -pipe forconductingthe n p l steam from the"` `boiler A to the lower front steam-chest, U."` p l g g gare the outer tubes, through Whic Eis the single steam-chest at the back of. the apparatus, into which `the superheated steam passes from the lower inner tubes, d d d.

" FromE the su perheated steam passes through the upper` inner` tubes, d d d', Vwhich are inclosed by the outer water-tubes, y g g', to the upper steam-chest, C', and from thence it 'passesthrongh the pipe E tothe place of use g g gf; surrounding the inner superheating steam-tubes, d d d d d d', is conducted into the apparatus through `the pipe K, and from thence passes into and lls the spaceW shown` in` front and includedbetween the partition` H' and the disk M, and thence through the outer tubes, g gg gtr/g', it fills thespaee W' at the rear included between the disk N and partition H. The water communicating through the said tubes gg gg g g' and spaces W W' also lls the space contained in the column L, the height ot' the water in` the apparatus being gaged `by the cocksat- 8o tached to L, as shown. The' water surrounding the tubes g g g and contained in the spaces l W W and column L is not consumed except as to whatever Waste may occur, which said wasteis constantly/.supplied and made good through the' pipe K.

lA'` is thesecondary furnace for superheatingthe steam. `The heat from A', restrained by the partition R, aseends first in the direction, indicated by the arrows uroundthe outerl tubes, ggg g g g', in front ofthe partition R."

tubes in rear of the said partition, as indicated by the arrows, and escapes through the flue X andy chimney Z, eft'ectually heating the said outer tubes, g g g g' g g', and the Water 9 5 therein contained, which inturn superheats the steam inthe inner tubes, d d d d d d'.

90V Thence the heat descends around the said Fig. 2 is a frontviewof the upper and lower steam tubes,v d d d d d d', attached to the partition H', and inclosed in the outerwater-tubes, g g g g' g' g', adjusted in the disl; M', and4 also showing the partition H,which divides the upper and lower steam-chests, G C'. J is the outer [lange of the steam-chests (l C', ,to which the front plate, M, is attached. The dotted line w w shows the relative position in end view of the tubes d d d df d' d' and g g g g' y g. be-

. plate of the apparatus, connected to the auge g F for the egress of the same.

Jof the steam-chests C C'. In the front plate, M, are fitted, as shown in the figure, the pipe B for the admission of the steam and the pipe Also, at K is the pipe for the admission ot' the water into the space W, whence it passes into theouter tubes, g' g' g', and also through the pipe L' tothe column L. (Notshownin the figure.) place of steam, the vapors ot' naphtha or of other volatile ui'ds or atmospheric air may be employed and be introduced the same as steam through the pipe B into the inner tubes, d d d d d d', and therein heated or superheated in like manner as steam.

`The number of tubes, both inner and outer, to be employed in the apparatus will vary in Inn The furnace A', if deslred, may be placed on the side o'f the apparatus in such a way that the heat shall first pass upward around a portion only of the tubes g g g or g' g g', and thence o descend around and among the remainder of the said tubes on the opposite side of the apparatus, and thence escape through the ue or chimney.- When the furnace A' is thus arranged the partition It will be in a longitudinal position instead of bein g-perpendioular, as shown in Fig. 1. p

What I claim as my invention, and 'desire to secure by Letters Patent, is

l. In an apparatus for superheating steam, the combination of the inner tubes, d d', and outer tubes, g g', with l the steam-chests C C' E, substantially in the manner and -for the purpose described.

2. rIlhe combination of the tubes d d d d'd' d' y y .fl y' .0 y', spaces W W', substantially 1n for the purpose described.

- 3. The combinationof the tubes l d d d' d' d' g g g g g' g', steam-chests C -G' E,waterspaces W W', and water-column Il, substantially in the manner and for the purpose described.

4. In an apparatus for superheating steam, the boiler A and secondary furnace A', in combination .with the tubes d d', steam-chests C E, and water-spaces W W', substantially in the manner and for the purpose described. v

WILLIAM H. BURNEI.

the manner andl Witnesses:

ABIGAIL B. ToMPKINs, DANIEL F. ToMPKINs.

steam-chests C C' E, and water- 

